Brake mechanism for motor-vehicles.



A. 0. BOYD. BRAKE MECHANISM FOR MOTOR VEHICLES.

v APPLICATION FILED NOV. I2, 1913.

I 9 146,9 1' 8a Patented July 20, 1915.

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Specification of Letters Patent. I ]Patented ,]'u1y 20, 1915-.

Application filed November 12, 1913. Serial No. 800,558.

' of the vehicle to insure a quick and reliable application of the brakes and a resultant stoppage of the forward movement of the vehicle within the minimum distance, thus materially lessening the liability of accidents by collision with pedestrians or with other vehicles;

The invention embodies the utilization of band brakes on the front axle of automobiles in addition to rear axle brakes, the forward brake mechanism being operativelyconnected to the rear axle brakes.

The invention includes the employment of connectin rods equipped with universal joints be ween the brake-rods and brake bands, adapting the front axle brakes to be operated without impeding the free movement of the front wheels in steering.

The construction of the improved brake mechanism will be fully described hereinafter in connection with the accompanying drawings which form a part of this specification and its features of novelty will be set forth and defined in the app nded claims.

In the drawingFigure Lis a detail top plan view on an enlarged scale of one end of the front axle of the vehicle with parts connected thereto, and Fig. 2 is a' detail front elevation'of the mechanism shown in Fig. 1.

The axle 4 supports front wheels ,5 on a spindle 5, formed integral with a vertical spindle 53 mounted in one forked end of the front axle 4. Above and parallel with the front axle 4, is a sectional shaft 7, which is rotatably mounted in upstanding bearing brackets 8, supported on said axle 4; and on the inner end of each section of said sectional shaft 7 ismounted a crank arm 10.

The outer end of each section of the shaft 7 is formed with a fork 11, in the axis of the spindle 5, for attachment to the inner end of a coupling rod 12 supported in an upstanding bearing ear 13 of a drumplate 17,

said coupling rod 12 being connected at its outer end as shown at 12 to a brake band 14,

. cooperating with a brake drum 15 on the Wheel 5. Secured to the vertical spindle 5 by mean of the angle arm A are L-shaped brackets 16 which support the drum plate 17. Upon the plate 17 are bosses 18 and 18*, provided with sockets, and in the socket of the upper boss is secured one end of a rod 18', by means of a set screw 19, the other end of said rod being loosely mounted in a boss 19 on the axle 4, above the spindle 5 The second or lower boss 18 is deeper and providedwith a spring pressed L-shaped rod 20 secured to the bottom of the brake band and having one end slidably engagedin said lower boss and bearing against said spring. Members 18 and 18 serve to brace the plate 17 while members 18 and 20 serve as a meansto prevent rattling of the band and also as an anchoring means in conjunction with lug 13. A link 22 has suitable connection with the crank arm 10, and the brake pedal (not shown).

The improvement affords efficient means for quickly stopping a motor vehicle, and hence for reducing to the minimum the liability of accidents by collision.

The details of construction may be varied or modified within the scope and purview of the claims, and it will therefore be understood that the invention is not restricted to the exact construction herein shown and described. 1

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is v 1. A device for controlling brakes fitted to the steering wheels of a vehicle comprising in combination with an axle and a wheelthereto; a drum carried by said Wheel; a a brake-band operating shaft; and an auxilbrake band encircling said drum; angle iary means for bracing said drum plate. 10 brackets secured to the Wheel spindle by In testimony whereof I aflik -lny signature means of an angle arm; a drum plate carin presence of two witnesses.

5 ried by said brackets having means for sup- AUSTIN C. BOYD.

porting the brake-band, said means com- Witnesses: prising'a spring pressed rod attached to the JAMES HEwEs,

band and a lug for supporting a section of JAs. A. CLARK. 

